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參數資料
| 型號： | WM8734 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | BOX 4.38X3.25X2.51 9V GRY |
| 中文描述： | 立體聲音頻編解碼 |
| 文件頁數： | 1/42頁 |
| 文件大小： | 414K |
| 代理商： | WM8734 |
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WM8734
Stereo Audio CODEC
WOLFSON MICROELECTRONICS LTD
www.wolfsonmicro.com
Advanced Information, November 2001, Rev 2.2
Copyright
2001 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8734 is a low power stereo CODEC ideal for MD,
CD-RW machines and DAT recording applications.
Stereo line inputs are provided, along with a mute function
and programmable line level volume control.
Stereo 24-bit multi-bit sigma delta ADCs and DACs are
used with oversampling digital interpolation and decimation
filters.
Digital audio input word lengths from 16-32 bits and
sampling rates from 8kHz to 96kHz are supported.
Stereo audio line level outputs are provided along with anti-
thump mute and power up/down circuitry.
The device is controlled via a 2 or 3 wire serial interface.
The interface provides access to all features including level
controls, mutes, de-emphasis and power management
facilities. The device is available in 20-pin SSOP or 5x5mm
QFN packages.
FEATURES
Audio Performance
90dB SNR (‘A’ weighted @ 48kHz) ADC
100dB SNR (‘A’ weighted @ 48kHz) DAC
2.7 – 3.6V Digital Supply Operation
2.7 – 3.6V Analogue Supply Operation
ADC and DAC Sampling Frequency: 8kHz – 96kHz
Selectable ADC High Pass Filter
2 or 3-Wire MPU Serial Control Interface
Programmable Audio Data Interface Modes
I
2
S, Left, Right Justified or DSP
16/20/24/32 bit Word Lengths
Master or Slave Clocking Mode
Stereo Audio Inputs and Outputs
20-Pin SSOP or 5x5mm QFN Package Options
APPLICATIONS
CD and Minidisc Recorder
MP3 Player / Recorder
BLOCK DIAGRAM
ADC
ADC
DIGITAL
FILTERS
DIGTAL AUDIO INTERFACE
CONTROL INTERFACE
DAC
DAC
C
S
S
ROUT
LOUT
RLINEIN
LLINEIN
VMID
D
D
AVDD
AGND
+12 to -34.5dB,
1.5dB Steps
+12 to -34.5dB,
1.5dB Steps
D
A
D
B
D
A
M
M
MUTE
MUTE
VOL
W
WM8734
CLKIN
DIVIDER
(Div x1, x2)
VOL
相關PDF資料 |
PDF描述 |
|---|---|
| WM8737 | BOX 4.38X3.25X2.51 GRY |
| WM8737L | STEREO ADC WITH MICROPHONE PREAMPLIFIER |
| WM8737GEFL | STEREO ADC WITH MICROPHONE PREAMPLIFIER |
| WM8738 | 24 BIT STEREO ADC |
| WM8738ED | 24 BIT STEREO ADC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8734_06 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Stereo Audio CODEC |
| WM8734EDS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:STEREO AUDIO CODEC |
| WM8734EDS/R | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| WM8734-EV1M | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:WM8734 Evaluation Board User Handbook |
| WM8734SEFL | 功能描述:接口—CODEC Stereo CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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